It's almost impossible not to get nervous in first dates, because you meet a person you're attracted to in a date for the first time, and you are unsure of what you should do, and of what their reactions will be. It's your first opportunity to see if things could work out with that person, and since you WANT them to work out, you try to show the best part of you, and hope that they will like you and want to go on a second date. So, it's perfectly normal to be nervous just be yourself and let it happen